Improvement in mechanical movements



w. 0. McGILL. MEGHANIGAL MOVEMENT.

o. 47,315. Patented A r. 18,1865.

vice for, first, the conversion of a reciproeatduplication of the pawls and third forms of my invention.

UNITED STATES PATENT .Q'FFICE.

WILLIAM C. MeGlLL, on CINCINNATI, OHIO.

IMPROVEMENT IN MECHANICAL MQVEM ENT S. j

Specification forming part of Letters Patent No. 47,315, dated spril 18, 1865,.

of the pawls mamas. is in To all whom it-may concern: .versing one allintentsand I 1 Be it known that I, WILLIAM C. MoGILL, stantly locked and rendered to of Cincinnati, Hamilton county, Ohio, have purposes immovable. i y t I invented a new and useful Mechanical Move- In the third form of my invention I provide; I ment; and I do hereby declare the following another shaft, Aj', journaled. in thehousings'B; to be afull, clear, and exa'ctdescription thereof, and B in line with theshaft A. The shaft reference being bad to the accompanying A carries a duplex reversed ratchet-wheel, I drawings, making part of this specification. G, for the engagement of two reversible du- ,1

My invention relates to a mechanical deplex pawls-,E andfE which are apreeise p E and E"., andare on into a continuous rotaryone; pivoted to the rear 'sides of the levers =D aiizd an elaboration of; the above, in which D in the same manner in which the pawls E a reciprocating motion is converted optionally and E are pivoted to the-front sides-of. said 1 into a continuous rotation, either forward or levers. The lowerpawlsmaybeheld upby 2 or backward, with capacity for self-locking, counter-weights G. y a w j I when required; thirdly, a duplication of the H showsa slot in the housingB'to permit last named, by which two or more shafts are of the play of the duplicate pawl. L y 1 i made capable of being rotated either in the In the illustration the pawls aresh'own so same or in reverse directions, or of being set as to eti'ect'a continuousrotatiom of the, j placed on lock. 4 i shafts in opposite directionsthefront shaft Figure 1 represents by side elevation the tothe right and the rear shaft to the left. 1 first and simplest form of my invention. Fig. ,An instant reversal of both motions, so as to 1 2 represents by perspective view the second cause thefropt shaft to rotate backwardanrlji l i the rear. shaft torotate forward, is accom 3 Corresponding parts in the several figures plished ;by simplyre'versing all the pawls, orf I are indicated by the same letters. by reversing the rear pawls only both sha ts My invention in its first and simplest form will be caused to rotate forward, or by reversis constructed as follows: A is a shaft jouring the front pawlsbothshafts will instantly. naled horizontally in suitable housings, B, and rotate backward, or by merely reversing. one bearing a ratchet-wheel, O. Pivoted to the of the duplex pawls thefentire apparatus} be- 1 housing B are two levers, D D, whose segcomes securely locked and immovable. 1 mental racks d d mesh together, so that a In applying the invention to vertical shafts, H motion of the lever D is accompanied by a springs-will take the place oieounter-weig hts. 1 simultaneous but opposite movement of the I claim herein as new andof my invention counter-lever D. Each lever carries a pawl, and desire to secure by Letters Patent- 1 E and E, of which the opp-en pawl, engages 1. The arrangement of shaft A, ratchet-j in the ratchet by its weight simply, while the wheel 0, geared levers D and D, and pawls lower pawl, E, is made effective by the pro- E and E, combined and operating in the man a a vision of a spring, F, or of a counter-weight. ner set forth. y j I In the second form of my invention the 2. The arrangement of shaft A, duplex re shaft A is provided-with a duplex reversed versed ratchet-wheel C, geared levers Dd ratchet-wheel, 0. Each lever D and D 'carand D d, and reversible duplex pawls E and L Y ries a reversible duplex pawl, E and E. combined and operating as represented. I

The above pawls in the illustration (see Fig. In testimony of which inventionf hereunto 1 W. O. MCGILL.

ing moti secondly,

2) are shown so set as to impart a forward or set my hand. right'hand rotationto the shaft. In order to reverse the direction of rotation it is only Witnesses:

necessary to throw the pawls. over to their- GEO. H. KNIGHT, other positions, or by the act of simply re- JAMES H. LAYMAN. I 

